Wedoany.com Report on Mar 6th, Wolfspeed, a U.S.-based company, recently announced a 10-kilovolt silicon carbide (SiC) power MOSFET, the first commercial product at this voltage level, marking a significant advancement for SiC technology in high-voltage power conversion. This new device is expected to provide innovative solutions for power supply designs in grid, industrial electrification, and large-scale computing facilities.
The new CPM3-10000-0300A device is optimized to address reliability and performance challenges in efficient power conversion systems. The company states that, based on time-dependent dielectric breakdown analysis, the projected lifetime of this device under a continuous 20-volt gate bias can reach approximately 158,000 years. Its architecture also addresses bipolar degradation issues during the operation of high-voltage SiC MOSFETs, making the body diode more reliable in switching applications.
The introduction of the 10kV SiC MOSFET brings greater flexibility to converter design. Systems that previously required multiple low-voltage devices in series or complex structures can now be simplified by using higher-voltage switches. This helps reduce the number of cells in multi-level topologies or enables a shift from three-level inverters to two-level architectures, thereby lowering component count and system complexity.
Compared to traditional Insulated Gate Bipolar Transistor (IGBT) solutions, higher-voltage SiC devices support higher switching frequencies. In some power conversion systems, switching frequencies can be increased from hundreds of hertz to several kilohertz, enabling smaller magnetic components and higher power density. A conversion efficiency approaching 99%, compared to traditional silicon-based technologies, may also alleviate thermal management burdens.
The device's fast-switching characteristics, such as a rise time below 10 nanoseconds, make it suitable for solid-state systems replacing mechanical spark gap switches. Solid-state SiC switches avoid arc formation, offering more precise timing in pulsed power applications, with potential uses in geothermal energy extraction, semiconductor etching, data center energy systems, and chemical production.
The CPM3-10000-0300A SiC MOSFET is currently available in die form for customer sampling and qualification, further advancing the development of high-voltage power electronics technology.
